add support for copying annotations from spec to generated source

[pettermahlen]

This is needed in order to support lint checks that methods documented as deprecated
are also annotated as deprecated.

[codecov]

Codecov Report

Merging #31 into master will decrease coverage by 0.3%.
The diff coverage is 88.88%.

@@             Coverage Diff              @@
##             master      #31      +/-   ##
============================================
- Coverage     95.94%   95.64%   -0.31%     
- Complexity      222      228       +6     
============================================
  Files            23       23              
  Lines           666      689      +23     
  Branches        102      106       +4     
============================================
+ Hits            639      659      +20     
- Misses           20       22       +2     
- Partials          7        8       +1

Impacted Files	Coverage Δ	Complexity Δ
...m/processor/generator/data/OutputValueFactory.java	92.3% <100%> (+0.15%)	19 <0> (ø)	⬇️
...ava/com/spotify/dataenum/processor/data/Value.java	90.9% <100%> (+2.02%)	5 <2> (+1)	⬆️
...taenum/processor/generator/value/ValueMethods.java	100% <100%> (ø)	14 <0> (+1)	⬆️
...m/spotify/dataenum/processor/data/OutputValue.java	100% <100%> (ø)	13 <2> (+1)	⬆️
...spotify/dataenum/processor/parser/ValueParser.java	95.31% <81.25%> (-4.69%)	18 <3> (+3)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c3b0faa...4c46c49. Read the comment docs.